Identifying the Structure and Elements of Nutritional Guidance Techniques: Cross-Sectional Analytic Hierarchy Study

Area of Science:

• Nutrition Science
• Health Professions Education
• Systems Engineering

Background:

• Registered dietitian nutritionists (RDNs) provide vital nutritional guidance for disease management and quality of life.
• Current practices often rely on individual experience, leading to variability in care quality.
• Standardized frameworks like the nutrition care process exist, but specific techniques and their relationships need clarification.

Purpose of the Study:

• To identify key elements influencing nutritional guidance techniques in clinical practice.
• To clarify the hierarchical structure of these elements using Interpretive Structural Modeling (ISM).
• To explore the applicability of the findings to registered dietitian education.

Main Methods:

• An expert panel of three experienced RDNs was convened.
• Elements influencing nutritional guidance were identified through structured brainstorming and consensus.
• ISM was employed to analyze element interrelationships and derive a hierarchical structure.

Main Results:

• Fourteen distinct elements influencing nutritional guidance techniques were identified.
• A 6-level hierarchical structure was established using ISM.
• The "nutritional intervention plan" was positioned at the top, with foundational elements like "clinical knowledge" at lower levels.

Conclusions:

• This study successfully mapped 14 elements of nutritional guidance into a 6-level hierarchy.
• The developed model offers a framework for standardizing clinical education and competency evaluation for RDNs.
• The findings support the advancement of standardized educational approaches in nutritional guidance.